/*
 * Created on 29-Dec-2004
 * Created by Paul Gardner
 * Copyright (C) Azureus Software, Inc, All Rights Reserved.
 *
 * This program is free software; you can redistribute it and/or
 * modify it under the terms of the GNU General Public License
 * as published by the Free Software Foundation; either version 2
 * of the License, or (at your option) any later version.
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 * You should have received a copy of the GNU General Public License
 * along with this program; if not, write to the Free Software
 * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.
 *
 */

package com.aelitis.azureus.plugins.clientid;

import java.util.Properties;

import org.gudy.azureus2.core3.config.COConfigurationManager;
import org.gudy.azureus2.core3.config.ParameterListener;
import org.gudy.azureus2.core3.peer.util.PeerUtils;
import org.gudy.azureus2.core3.util.Constants;
import org.gudy.azureus2.plugins.clientid.ClientIDGenerator;
import org.gudy.azureus2.plugins.torrent.Torrent;
import org.gudy.azureus2.pluginsimpl.local.clientid.ClientIDManagerImpl;

/**
 * @author parg
 * 
 */

public class ClientIDPlugin {
    private static boolean send_os;

    public static void initialize() {
        final String param = "Tracker Client Send OS and Java Version";

        COConfigurationManager.addAndFireParameterListener(param, new ParameterListener() {
            public void parameterChanged(String param) {
                send_os = COConfigurationManager.getBooleanParameter(param);
            }
        });

        ClientIDManagerImpl.getSingleton().setGenerator(new ClientIDGenerator() {
            public byte[] generatePeerID(Torrent torrent, boolean for_tracker) {
                return (PeerUtils.createPeerID());
            }

            public void generateHTTPProperties(Properties properties) {
                doHTTPProperties(properties);
            }

            public String[] filterHTTP(String[] lines_in) {
                return (lines_in);
            }
        }, false);
    }

    protected static void doHTTPProperties(Properties properties) {
        Boolean raw = (Boolean) properties.get(ClientIDGenerator.PR_RAW_REQUEST);

        if (raw != null && raw) {

            return;
        }

        String version = Constants.AZUREUS_VERSION;

        // trim of any _Bnn or _CVS suffix as unfortunately some trackers can't cope with this
        // (well, apparently can't cope with B10)
        // its not a big deal anyway

        int pos = version.indexOf('_');

        if (pos != -1) {

            version = version.substring(0, pos);
        }

        String agent = Constants.AZUREUS_NAME + " " + version;

        if (send_os) {

            agent += ";" + Constants.OSName;

            agent += ";Java " + Constants.JAVA_VERSION;
        }

        properties.put(ClientIDGenerator.PR_USER_AGENT, agent);
    }
}
